Hi, I hope someone can give me an idea of where I am going wrong here with this challenge.
For now I am just trying to build an array of all possible combinations of the characters in the passed string. I don’t know if the issue I am having is to do with losing the scope of the arr variable but was under the impression if I passed and returned it with each function call (recurse function) that I would essentially have all the values returned to the original function call. All that is left in arr is ‘aab’ when the original call returns.
This is my code:
function recurse(str,currStr,arr,fullLen){
if (currStr.length===fullLen){
arr.push(currStr);
}
else {
for (i=0;i<str.length;i++){
var tempStr="";
if (i===0 && str.length>1)
tempStr=str.slice(1);
else if (str.length===1)
tempStr="";
else if (i===(str.length-1))
tempStr=str.slice(0,-1);
else
tempStr=str.slice(0,i)+str.slice(i+1);
arr=recurse(tempStr,currStr+str[i],arr,fullLen);
}
}
return arr;
}
function permAlone(str) {
var arr=[];
arr=recurse(str,"",arr,str.length);
//console.log(arr);
return arr;
}
permAlone('aab');
